front-page.html

<!-- wp:template-part {"slug":"header","tagName":"header","className":"site-header"} /-->
<!-- wp:group {"tagName":"main","className":"site-content","style":{"spacing":{"margin":{"top":"0"}}}} -->
<main class="wp-block-group site-content" style="margin-top:0">
	<!-- wp:pattern {"slug":"frost/page-home"} /-->
</main>
<!-- /wp:group -->
<!-- wp:template-part {"slug":"footer","tagName":"footer","className":"site-footer"} /-->

page-home.php

<?php
/**
 * Title: Sample home page.
 * Slug: frost/page-home
 * Categories: frost-page
 * Viewport Width: 1280
 */

$has_static_page = get_option( 'page_on_front' );
?>
<?php if ( ! $has_static_page ) : ?>
<!-- wp:paragraph -->
<p><?php echo esc_html__( 'Front page', 'frost' ); ?></p>
<!-- /wp:paragraph -->

<?php else : ?>
<!-- wp:paragraph -->
<p><?php echo esc_html__( 'Other', 'frost' ); ?></p>
<!-- /wp:paragraph -->
<?php endif; ?>

These files would go in the corresponding directories:

• patterns/page-home.php - has a conditional check for get_option( 'page_on_front' ); which loads different content based on response.
• templates/front-page.html - references and loads the patterns/page-home.php.